Maoyuu Maou Yuusha s01e06

Titre original : Welcome Back, Hero! Yeah, Old Man. I'm Back!

The Crimson Scholar offers plans to the Winter Kingdom to capture Aurora Island. Hero liberates Gateway City by terrifying the nobles to an extent which makes them flee the city. The commander flees after selecting the new commander of the city, of which this new commander decides to make Gateway City a new government that allows humans and demons to live together. The Crimson Scholar unfolds the plan to create an artificial land bridge linking the Winter Kingdom and Aurora Island. After capturing the beachhead, they learn that the Ice General is currently awaiting to be besieged, with an army of 8,000. However, the Winter Kingdom only has an army of 12,000; when normally three times the amount, 24,000, is necessary to successfully siege a castle. However, Hero arrives with a grand army of 9,000 of the best soldiers the Humans have. These soldiers are actually those who had fled the Gateway City, led by the previous commander of Gateway City to aid the Winter Kingdom. Due to this, the Ice General immediately launches his entire army to attack Winter Kingdom, but is soon defeated. The Winter Kingdom has now captured Aurora Island. While the kingdom is celebrating, Hero is welcomed back to the Winter Kingdom by Rou Yumihei, whom he refers to as old man.